China's Large Wind Tunnel

1939 ◽  
Vol 11 (9) ◽  
pp. 315-350
Author(s):  
F.L. Wattendorf
Keyword(s):  
Wind Tunnel ◽  
Large Wind

An overview of experiments on the dynamic sensitivity of MAVs to turbulence

2010 ◽  
Vol 114 (1158) ◽  
pp. 485-492 ◽  
Author(s):  
A. Watkins ◽  
M. Thompson ◽  
M. Shortis ◽  
R. Segal ◽  
M. Abdulrahim ◽  
...  
Keyword(s):  
Wind Tunnel ◽  
Micro Air Vehicles ◽  
Rating System ◽  
Flight Tests ◽  
Wind Environment ◽  
Turbulent Wind ◽  
High Turbulence ◽  
Per Se ◽  
Rotary Wing ◽  
Large Wind

Abstract Aspects of the turbulent wind environment Micro Air Vehicles (MAVs) experience when flying outdoors were replicated in a large wind tunnel. An overview of the facility, instrumentation and initial flight tests is given. Piloting inputs and aircraft accelerations were recorded on fixed and rotary wing MAVs and for some tests, measurements of the approach flow (u,v,w sampled at 1,250Hz at four laterally disposed upstream locations) were made. The piloting aim was to hold straight and level flight in the 12m wide × 4m high × ~50m long test section, while flying in a range of turbulent conditions. The Cooper-Harper rating system showed that a rotary craft was less sensitive to the effects of turbulence compared to the fixed wing craft and that while the fixed wing aircraft was relatively easy to fly in smooth air, it became extremely difficult to fly under high turbulence conditions. The rotary craft, while more difficult to fly per. se., did not become significantly harder to fly in relatively high turbulence levels. However the rotary craft had a higher mass and MOI than the fixed wing craft and further work is planned to understand the effects of these differences.

scholarly journals Superconducting electromagnets for large wind tunnel magnetic suspension and balance systems

1985 ◽  
Vol 21 (2) ◽  
pp. 444-447 ◽  
Author(s):  
R. Boom ◽  
Y. Eyssa ◽  
G. McIntosh ◽  
M. Abdelsalam ◽  
R. Scurlock ◽  
...  
Keyword(s):  
Wind Tunnel ◽  
Magnetic Suspension ◽  
Large Wind

The Ground Simulation Upgrade of the Large Wind Tunnel at the Technische Universität München

2012 ◽  
Author(s):  
Steffen Mack ◽  
Thomas Indinger ◽  
Nikolaus A. Adams ◽  
Peter Unterlechner
Keyword(s):  
Wind Tunnel ◽  
Large Wind

Wind Loadings on the Water Tank at Building Roof Top with Variant Installation Conditions

2013 ◽  
Vol 470 ◽  
pp. 1081-1084
Author(s):  
Jwo Hua Chen
Keyword(s):  
Wind Tunnel ◽  
Attack Angle ◽  
Border Region ◽  
Wind Loading ◽  
Water Tank ◽  
Building Roof ◽  
Gable Roof ◽  
Horizontal Tank ◽  
Large Wind ◽  
Symmetric Shape

A series of wind tunnel aerodynamic experiments were conducted to investigate the wind loads on the water tank located around the roof top of low-rise buildings with gable roof. There are two installation conditions discussed in this study, they were the alignment of tank and the location on roof. The result shown, the vertical tank might suffer less wind loading at each wind attack angle due to its symmetric shape. And the horizontal tank would have large wind loading in some approaching flow angles, especially in the 45 degrees attack angle the wind loading may reach its maximum. The variant location and roof slope were checked for the water tank installation, the results shown that the tank which installed at ridge region will suffer higher wind loadings and the border region of roof will be the recommended region for water tank installation.

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